Overhead traveling crane.



No. 68!,575. Patented Aug. 27, 190i. G. W. PACKER':

OVERHEAD TRAVELING CRANE.

(Application filed Aug. 2, 1900.\ (No Model.) 7 Sheets-Sheet Wvrmw WWW@M m No. 68l,575. Patented Aug. 27, l90l. G. W. PACKEB.

OVERHEAD TRAVELING CRANE.

(Application filed Aug- 2, 1900.

7 Shasta-Sheet 2.

(No Model.)

wls PETERS co. nuorouwou WASHINGTON, n. v

No. 68!,575. Patented Aug. 27, I901.

G. W. PACKEH. UVERHEAD TRAVELING CRANE.

(Application filed Aug. 2, 1900.)

7 sham-slim 3.

(No Model.)

vuz gomiis Paras co. mowu'ma. wwma'ron. a. q.

No. 681,575. Patented Aug. 27, IQCL a. w. PAGKER.

OVERHEAD TRAVELING CRANE.

(Application filed Aug. 2, 1900.)

VVHncssm InveMov (a; rgi W. Pac

THE ndflms vrrzns co, Momma. wAsmnoTcM. a. c

No. 681,575. Patented Aug. 27, l90l. a. w. PACKEB.

UVERHEAD TRAVELING CRANE.

(Application filed Aug. 2, 1900.)

7 Sheets-Sheet 5.

(N o Model.)

Invemov m: Noam: PEYERS 00.. FHOTO-LITHOU wnsnlnu'rcu, :1v 0.

No. B8|;575. Patented Aug. 27, mm. a. w. PACK'ER.

OVERHEAD TRAVELING CRANE.

(Application filed Aug. 2, 1900. (No Model.) 7 Shaets-Sheet '6,

\N'XYnesses. Ihvcrvfov (No Model.)

Patented Aug. 27, I90l.

G. W. PACKEB.

OVERHEAD TRAVELING CRANE.

(Application filed Aug. 2, 1900.)

7 Sheets-Shaet 7.

- c ZIIII IIIIIII/IIIII III/I,

I n v c Mor uw w. Pat

UNTTED STATES PATENT Trice.

' GEORGE \V. PACKER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE DEERINGHARVESTER COMPANY, OF SAME PLACE.

OVERHEAD TRAVELING CRANE.

SPECIFICATION forming part of Letters Patent No. 681,575, dated August27, 1901.

Application filed August 2, 1900. Serial No. (N model) To all whom itmay concern.-

Be it known that I, GEORGE W. PACKER, a

. citizen of the United States, residing at Ohicago, Illinois, haveinvented certain new and useful Improvements in Overhead TravelingCranes, of which the following is a specification.

This invention relates to overhead traveling cranes of that classemploying a frame [0 mounted on wheels and traveling on a track andcarrying a carriage likewise mounted on wheels and traveling on a trackon the frame and having supported from the carriage the arm or boom forlifting, carrying, delivering,

and distributing various articles in different places and for differentpurposes.

The objects of the invention are ioimprove the construction andoperation of the devices and appliances by which the crane is trav-.

2o eled as a whole and by which the arm or boom is raised and loweredand swung into different positions and reciprocated as required for use;to enable the power employed to be a single electric or other form ofmotor having the capacity or adaptability to furnish the power requiredfor operating the crane as a whole and its different working parts; toutilize and obtain the benefits and advantages of fluid-pressure,preferably compressed air,

0 in shifting the clutches for throwing into or out of use the severalmoving and working parts or appliances of the crane asa Whole; toimprove the suspending means and turning appliances for the arm or boom;to im- 5 prove the construction and operation of the arm or boom, and toimprove generally the construction and arrangement of the separatedevices and appliances which enter into the construction and operationof the crane as a whole.

The invention consists in the features of construction and combinationof parts hereinafter described, and pointed out in the claims as new.

In the drawings illustratingthe invention, Figure 1 is a top or planview with the supporting-beams of the main track broken away at each endand with the side beams or girders of the frame for the carriage brokenout at each end. Fig. 2 is a side elevation of the parts shown inFig. 1. Fig. 3 is a central longitudinal sectional elevation through thecarriage with the raising and lowering screwshaft for the arm or boombroken off at the end; Fig. 4, a central longitudinal sectional 5'5elevation of the lower end of the suspensiontube and the raising andlowering screw and of the arm or boom and its operating appliances withthe arm or boom broken out at each end and showing also the platform onthe arm or boom on which the operator stands and the levers foroperating the fluid-pressure cylinders and other parts; Fig. 5, atransverse section on line 5 of Fig. 4 enlarged; Fig. 6, a top or planview of the arm or boom and its operating devices or appliances, showingthe suspending-tube in section and showing the arm or boom broken out atone end; Fig. 7, a side elevation of the parts shown in Fig. 6; Fig. 8,an end elevation of the traveling frame and an 'end elevation of thecarriage or traveling support on the frame with some of the partscarried thereon omitted and with the suspending turn-table-cylindershaft or tube broken off; Fig. 9, a cross-section on line 9 9 of Fig. 6,showing an elevation of the fluid-pressu re-valve chambers, the pipesshut off, and the operating-levers; Fig. 10, a detail of the acting endof the arm or boom, showing the foot-lever, the cord, and the trip-armfor dropping the pick-up or lifter; Fig. 11, a detail of the lever-rodand the clutch-shifting arms for the clutches of the screw-threadedshaft of the arm or boom; Fig. 12, a crosssection on line 12 of Fig. 6,showing the support for the pick-up or lifter; and Fig. 13, across-section on line 13 13 of Fig. 4, showing the connection betweenthe end of the arm or boom and the pickup or lifter.

The crane as a whole is to have a travel' back and forth on a suitabletrack, and, as shown, an I-beam A is suitably supported on each side ofthe runway for the crane, and on each I-beam is secured an ordinary T orother rail Ct, suitable for the wheels, by which the crane is traveledback and forth in the runway or other place of use. The frame for thecarriage which travels on the main track may be formed of side beams orgirders B, which may be of the I-beam variety or other suitable shape,and the side beams or girders are united at each end by an end beam orgirder B and each end of the beam or girderB has suitably journaledthereon a carrying-wheel B, adapted to run 'on the maintrack rails a,and travel the frame back and forth there on. Each side beam or girderof the frame has secured thereto an ordinary T or other suitable railZ), the rail extending from end to end of the side beam or girder. Oneside beam B has mounted in suitable bearings b thereon a main drivingshaft or axle B for the carrying-wheels B, driven by a train of gear, ashereinafter described,from the powermotorand suitable driving-belts andother means.

The carriage to travel on the side beams of the frame and which supportsand carries the arm or boom and the operating devices and appliances maybe formed with side sills or beams O of the channel-iron type or othersuitable form and with end sills or beams D of the same type as the sidesills or beams, and for rigidity and strength the corners of thecarriage frame can be stiffened and strengthened by angle corner-pieces.As shown,the frame has longitudinal sills or bars D and cross sills orbars D which furnish a support for the operating parts, and extendingfrom side beam to side beam is a raised support or arch D central of thecarriage. The carriage is mounted on wheels 0, running on thetrack-rails b of the frame, a pair of wheels being provided at each endof the carriage, keyed or otherwise attached to the axles C suitablyjournaled in the side beams of the carriage. The travel of the carriageis controlled by brake shoes 0 engaging wheels 0 on one side of thecarriage. Each brake-shoe is pivoted to a sliding rod 0, made in twoparts, with a turnbuckle connection for adjusting purposes, and theparts of the rod are mounted in suitable bearings c on the side beam.Each rod has pivoted to its inner end a link 0 the two links comingtogether at their inner ends and having a pivotal connection to thepison-rod or stem 0 of a piston which traverses a fluid-pressure orcompressed-air cylinder 0 which cylinder is mounted by side ears or arms0 to an upright or standard 0 attached to the top of the side beam. Theadmission of fluid-pressure or compressed air into the cylinder movesthe piston thereof upward to force the stem 0 upward, thereby raisingthe links and moving the sliding stems outward, applying the brake-shoesto the carrying-wheels to stop the movements of the carriage.

The power for traveling the crane forward and back on the main track andmoving the carriage forward and back on the frame in the arrangementshown is furnished by an electric motor E, which is to receive the powerin anysuitable manneras, for instance, from electric conductors throughtrolley poles and wheels or shoesand the motor can be of thedirect-current type or other suitable construction of motor. The shaft Eof the motor has on its end a gear E, which meshes with a gear on theend of the main power-shaft for operating the Various devices andappliances pertaining to the movements of the crane arm or boom. Themain power-shaft F extends from end to end of the carriage, and at eachend has thereon a worm-gear and the ends of the shaft are supported insuitable journal boxes or bearings f on standards or uprights F, mountedon cross-plates supported on the longitudinal sills or beams D of thecarriage or otherwise supported, and, as shown, adjacent to one of theworm-gears f the shaft is supported in a suitable journal box orbearingf" on an upright or post F mounted on and extending up from thelongitudinal sills or beams D, and at the center of the shaftlongitudinally is a suitable journal box or bearingf" on the arch orraised bar D at the center of the carriage. The shaft F has thereon apulley 61!, over which and around a driving-wheel d a belt d runs. Thedriving-Wheel d is on a shaft 61 supported in a suitable journal box orhearing d on a standard orsupport 61 attached to one side beam or sillof the carriage-frame. An air-compressor pump e is mounted on thecarriage-frame and is operated from the driving- Wheel (Z and its shaftby an arm 6', reciprocated by the rotation of the shaft (Z from acrank-wheel e and its wrist-pin 6 so as to compress air in the usualmanner for use, as hereinafter described.

A cross-shaft G is located at each end of the carriage-frame, and eachshaft is suitably mounted at its outer end in a journal box or bearing gon an upright or standard G, attached to the carriage-frame, and at itsinner end each shaft is supported in the upper end of an upright orstandard G (see Figs. 3 and S) on the carriage-frame. Each shaft G has agear-wheel g secured thereon to engage with the worm-gearf, so that therotation of the main power-shaft F will rotate one or the othercross-shaft G and travel the carriage or support in one direction or theother, according to which spur-gear and worm-gear has its shaft engagedto do the driving. Each shaft G has thereon a gear G which meshes with agear G on the axle of the carrying-wheels of the carriage, for whichpurpose a shaft is located in line with a cross-shaft or axle of thecarriage having thereon the wheels. Each gear G has adjacent thereto andconnected therewith a friction-clutch G The clutch G may be of anysuitable construction. As shown, it is in the form of a rim 9 on thegear, into which a cone or expanding rim g extends, and the cone or rimis on a sleeve or hub splined on the shaft, so as to be free to move, asis common with clutches. Each sleeve or hub g of the cone has flangesbetween which is located a lever having a stud or pivot connection withthe sleeve or hub, one lever G operating the clutch of one gear and theother gear G having its clutch operated by a lever G of a similarconstruction to the lever G, so that a description of one leverdescribes both levers. 7 Each lever has at its outer end a fork g whichstraddles or passes on each side of a rod or shaft G supported from thecarriage-frame in suitable standards or uprights G The end g of thelever is located between collars g on said shaft G one of which ismovable on the shaft, and around the shaft between the movable collar g7and a collar g is a coiled spring 9 by means of which the lever isreturned to and maintained in a normal posi tion, with the parts of theclutch disengaged. The opposite end g of each lever is pivoted to theend of a bracket or arm g attached to a longitudinal sill or bar D ofthe carriage-frame in the arrangement shown, giving this end of thelever a fiXed pivot and leaving the opposite end g of the lever free tobe moved and have such movement operate the clutch.

The pitches of the worm-gears are opposite, one having a right-handpitch and the other a left hand, by which arrangement the travel of thecarriage will be in one direction or the other, according to whichclutch is engaged. The engagement of the clutch for the lever Gr causesthe worm-gear having the righthand pitch to operate and travel thecarriage in the opposite direction to the pitch of the worm, and withthe clutch of the lever G engaged the worm-gear with the left-hand pitchoperates and travels the carriage in the opposite direction to the pitchof the worm, thus giving a reverse travel to the carriage from theoperation of the two worms. It will thus be seen that by engaging theclutch of the proper lever the direction in which the carriage is to hetraveled is controlled, as with such engagement the cooperating wormgearof the engaged clutch acts and travels the carriage, thus enabling thecarriage to he traveled back and forth on the frame as desired byengaging the clutch of one lever or the other to give oppositedirections of travel. WVith the disengagement of both levers thecarriage will remain stationary at any point of travel andcan be stoppedat the point desired by the application of the brake to the wheels, andwhen one clutch is engaged the other clutch is disengaged, preventingthe worm for the disengaged clutch from imparting rotation to the axledriven from its shaft.

A straight belt H and a cross-belt H f urnish the means for travelingthe frame on the main track in opposite directions. The straight belt Hruns over a pulley H on the main power-shaft F and over a pulley H on acounter-shaft I, supported in suitable bearings or boxes on a bracket orsupport 2', attached to the end beams 13 of the carryingframe. Thecross-belt H runs overa pulley H on the main power-shaft F and over apulley H on the counter-shaft I, by which arrangement the counter-shaftwill be driven in one direction or the other, according to which belt isdoing the driving. Each pulley H and H is loosely mounted on the shaftand each has cooperating therewith a clutch, both clutches operated froma common lever H Each clutch, as shown, is of the clamp band or jawform, having a flange or rim h on the pulley engaged by a clamp band orring on a center or spider it, forced into clamping the flange by theoperation of contact levers or arms 7L engaged by a sliding collar 7Lmounted on a hub k of the center or spider, each hub being keyedorsplined to the powershaft. The common lever H is pivotally connectedwith the sliding collar or sleeve h'' by a suitable stud or pivot andhas a forked end its to straddle or pass on each side of a rod or shaft1-1 secured in posts or uprights H mounted on a longitudinal sill orbeam D of the carriage-frame. The forked end 71 extends between twomovable collars 7?. on the shaft, and between each collar [t and acollar 7r, fixed to the shaft, is a coiled spring 71 by means of whichthe lever is held in normal position and returned to normal positionafter each movement, so that when in normal position the clutch ofneither pulley is engaged and neither pulley will be revolved.

The movement of the lever to engage the clutch of the pulley H willrevolve that pulley from the power-shaft and drive the belt H andthrough the pulley H revolve the counter-shaft I, and with thedisengagement of the pulley H from its clutch and the engagement of thepulley H by its clutch through the movement of the lever 11 the pulley Hwill drive the belt H, driving the pulley H to revolve the counter-shaftI in the opposite direction from the revolving of such shaft by thepulley H Either clutch, as required, is engaged with its pulley bymoving the lever H, so as to move the collar 71 and cause such collar toact on the levers or arms 7L and force the levers or arms inward,engaging the clamp rim or band with the flange or rim h of the pulley.The opposite end it of each lever H is pivoted to a bracket or support71. clamped on a shaft H secured in suitable standards or uprights H ona longitudinal sill or beam D of the carriage-frame and on the oppositeside of the power-shaft to the shaft H as shown in Fig. 1. at one end agear I, which meshes with a gear I on a journal or spindle on thebracket or support c on one end sill of the carriageframe, and the gear1 meshes with a gear I on the shaft or axle B for rotating the shaft oraxle in one direction or the other, according as to whether the straightbelt or the cross-belt is doing the driving. The shaft or axle B at eachend has a gear I, which meshes with a gear I on the spindle or axle ofthe traveling wheel at that end of the frame, so that the rotation ofthe shaft through the gears rotates the two wheels simultaneously andtravels the carriage back and forth on the main track.

Secured to a longitudinal sillD of the car- The oppositely-rotatingshaft I has riage-frame is a hanger J, attached to collars j on theshaft I, which collars have secured main frame for the contact to movethe support or bearing out of the way and permit the carriage to passthe support or bearing in its One of the shafts travel in eitherdirection. 7' has secured thereto a weighted arm 3' returned to normalposition by a spring 7' thereby returning the drop support or bearingafter it has been passed by the hanger.

The collars j are connected with the carriage or trolley through thesuspending brackets J, and the pulleys H H which are keyed to the shaft1, are located between the collars j, and as the carriage or trolleytravels back and forth the pulleys are moved accordingly on the shaft.

An outer supporting cylinder or tube K depends centrally from thecarriage and is supported on the longitudinal sills D and cross-sills Dby a head or plate is, bolted to the sills. This outer supportingcylinder or tube is fixed in position and has located within itsinterior a rotatable cylinder or tubularshaft K, suspended from the hubor center of the main driving-wheel. A second cylinder or tubular shaftK slides in the cylinder or shaft K and is connected therewith by asuitable spline Z: on the sliding or extensible cylinder or shaft Krunning in a groove of the fixed cylinder or shaft K, so that thecylinder or shaft K can be projected and returned in a straight-linemovement. The two cylinders or shafts K and K constitute an extensibleturning or turntablesuspending cylinder or shaft for carrying the arm orboom. A hollow shaft K extends inside of and downward through the fixedcylinder or shaft K and this shaft K has an exterior screw-thread, whichengages with a nut 7s,-screw-threaded or otherwise entered in andsecured to the end. of the extensible section K of the suspendingcylinder or shaft, so that with the rotation of the hollow shaft K thenut will be advanced or receded thereon to project or return the movablesection of the suspending cylinder or shaft. A sleeve or hollow rod Kextends through the hollow shaft K and has sliding therein a rod orshaft K the sleeve or hollow rod and the solid rod forming an extensiblepower rod or shaft for operating the gear for reciprocating the arm orboom. The lower end of the sleeve or rod K has secured therein a bearingk attached to a section 712 and the bearing 70 has a spline or key 76which enters a groove or slot k in the extensible or sliding rod orshaft-section, locking the sliding rod or shaft and the fixed hollow rodor shaft together, so as to revolve in unison. The lower end of thefixed supporting outer cylinder or tube K has on its interior a band orring 76 and a band or ring R is on the lower end of the cylinder or tubeK, the two bands or rings each having a groove or recess forming a trackor race for balls 70 so as to furnish a ball-bearing between the twocylinders or tubes to reduce the friction and facilitate the turning ofthe cylinder or tube K in the operation of the crane. The head orsupport R has thereon a band or track 70, having a groove in its upperface, and a band or track 7e having a groove in its under face, isattached to the hub or centerof the main gear for turning thesuspending-tube, and between the two bands or tracks in the grooves areballs 70, furnishing a ball-bearing for the main gear and the suspendingturn-table cylinder or tube for lessening the friction and giving thecylinder or tube an easy bearing for turning.

The main turning or turn-table gear L, from the center or hub of whichthe turning or turn-table tube cylinder or shaft as a whole issuspended, has its gear in mesh with a pinion Z on a shaft L, supportedin suitable journal boxes or bearings f on an arm or support F attachedto one of the longitudinal sills D of the carriage-frame. The shaft atits upper end has secured thereto a bevelgear L in mesh with which onopposite sides is a bevel-pinion Z and a bevel-pinion Z, facing eachother and both loosely mounted on the main power-shaft F. Eachbevel-pinion is held against end movement in one direction by a collarZ, respectively, fixed on the shaft, and is locked in place against endmovement in the opposite direction by a ring Z on the shaft, and betweenthe two rings the hub or sleeve on which each gear is mounted iscontinued, so as to form the cup-section L of a friction-clutch. Eachcup-section has a friction-cone Z to cooperate therewith, and the conesare carried by a sliding sleeve Z, splined to the power-shaft F, so thatthe sleeve can be moved and cause the frictioncones to engage with theirrespective clutchcups. Pivotally connected with the sliding collar Z' bya suitable stud or pivot is a lever L one end of which has a fork Zwhich straddles or passes on each side of the fixed shaft or rod H Eachside of the forked end of the lever L on the rod H is a movable collar Zand between each movable collar and a fixed collar Z on the shaft H is acoiled spring Z which operates to hold the lever L in normal positionwith both clutches out of engagement and to permit the lever to be movedin either direction and after each movement have the spring on the sidein the direction of movement act to return the lever and disengage theclutch, which has been brought into engagement by the movement of thelever. The opposite end Z of the lever is pivoted to a bracket or arm Zclamped onto the rod H so as to permit the end 6 of the lever to bemoved as required to engage the bevel-pinion L or the bevel-pinion L Thepinions L and L are located onopposite sides of the bevel-gear L andsuch gear will be given a rotation in one direction by the action of thepinion L when in clutch with the power-shaft and will be rotated in theopposite direction by the action of the pinion L when in clutch with thepowershaft, and either pinion can be brought into clutch with thepower-shaft by moving the lever L in the direction to engage thefriction-clutch of the pinion L or the frictionclutch of the pinion L asrequired, for the direction of rotation of the suspending turning orturn-table cylinder or tubular shaft. The rotation of the bevel-gear Lrotates the shaft L and causes the pinion Z, fixed thereto, to rotatethe main gear L, and the rotation of the main gear will be governed bythe rotation of the gear L from the pinion L or the pinion L and withthe rotation of the main gear L the inner cylinder or tube K will berotated in one direction or the other, according to the rotation of themain gear, and such rotation of the cylinder or tube K also rotates theextensible cylinder or tube K by the spline connection between the twocylinders or tubes. It will thus be 'seen that the suspending extensibleturning or turntable cylinder or tubular shaft as a whole can be rotatedin one direction or be given a reverse direction of rotation by simplyengaging one or the other of the pinions with the power-shaft.

The tubular screw-threaded shaft K is attached at its upper end to thecenter or hub of a bevel-gear M, which gear is engaged with a bevel-gearM and a bevel-gear 1W, facing each other and located on opposite sidesof the bevel-gear M and loosely mounted on the main power-shaft F. Eachbevelgear M and M has a friction-clutch M of a construction employing arim or band m, attached to the gear, and havinga flange located betweena spider or center 'm and a movable clamping-jaw carried by the spideroperatedby arms or levers m which arms or levers are engaged by asliding collar or sleeve m slidably mounted on the hub of the spider orcenter, which hub is splined to the powershaft, and, as shown, thebevelgear is held on one side against end movement on the shaft by thehub m and on the opposite side by a collar, fixed to the power-shaft. Alever M, connected with the collar of the clutch for the bevel-gear M bya suit-able stud or pivot, is provided to operate that clutch, and alever M connected with the collar or sleeve of the clutch for thebevelgear M by a suitable stud or pivot, is provided for operating thatclutch. Each lever has a forked end m, which straddles or passes onopposite sides of the fixed shaft H and the forked end of each lever islocated between collars m one of which is fixed to and the other ismovable on the shaft H and between the movable collar m' and a fixedcollar m around the shaft H is a coiled spring m which permits themovement of the lever in one direction and returns the lever to nor 'malposition and holds the lever in normal position with the clutch of thebevel-gear out of engagement, so that with the rotation of thepower-shaft neither bevel-gear will operate and no rotation of thescrew-threaded shaft Will occur, maintaining the suspending cylinder ortube in whatever position the extensible section thereof may beadjusted. The other end m of each lever M and M is pivotally attached toa bracket or support m clamped onto the fixed shaft H furnishing apivotal fixed connection for the end of the lever, permitting the forkedend to be moved. A band or track m having a groove in its upper face, isattached to the center or hub of the main driving-wheel L, and a band ortrack m having a groove in its under face, is attached to the hub orcenter of the bevelgear M, and between the two bands or tracks in thegrooves are located balls m, which furnish a ball-bearing for thebevel-gear to lessen the friction and give the screw-threaded shaft afree and easy revolution.

The upper end of the hollow shaft or rod K has attached thereto a bevelgear N, in mesh with which is a bevel-gear N on the main power-shaft F,so that the rotation of -the power-shaft rotates the gears and givesrotation to the extensible power rod or shaft K and K The upper end ofthe shaft or rod K abuts against a guide or head N entered into thescrew-threaded tube K so as to have a bearing therein. A coupling stemor plug N has one end 01, extended through the guide or bearing-head andthe other end a extended into the end of the hollow shaft or rod K andattached thereto by suitable pins or rivets m and to the end 02 isattached the bevel-gear N by a key at to drive the power shaft or red.The head of the bevelgear Nhas secured to its hub end a band or track11, having a groove in its face, and the guide or hearing head N hassecured to its end a band or track n having a groove in its face, andbetween the two bands or tracks, in the grooves, are balls a furnishingaballbearing for the bevel-gear,decreasing the friction and givinggreater freedom and ease of rotation for driving the power rod or shaftK and K It will be seen that by the bevel-gears M, M, and M thescrew-threaded tubular shaft K is given either right or left handedrotation, according as to which gear M and M is clutched to the mainpower-shaft. This rotation of the tubular screw-threaded shaft throughthe nut is, which is traveled up and down on and by the rotation of theshaft, causes the extensible section K of the turntable-suspendingcylinder or tubular sh aft to be projected or returned, according to thedirection of rotation of the screw threaded shaft, the rotation in onedirection traveling the nut downward on the screw-threaded shaft andprojecting or advancing the extensible section K and. the rotation inthe opposite direetion traveling the nut upward on forming a support orbearing.

the screw-threaded shaft, receding or returning the extensible section,so that this extensible section can be raised or lowered, as required,for the operation of horizontally raising and lowering the arm or boomwhich is carried thereby.

The bevel-gears N and N are always in mesh and have the same directionof rotation, so that the rotation of the power rod or shaft K and K isat all times in the same direction. The rotation of the threaded tubeand the rotation of the power rod or shaft in no way interferes one withthe other, owing to the location and support of the power rod or shaftwithin the screw-threaded tubular shaft by the bearing guides or headsat each end of the hollow section of the power rod or shaft, withinwhich the movable or sliding section is located, and the rotation of thehollow section K, which carries the movable or sliding section K doesnot interfere with the extension or projection of the power rod or shaftcoincident with the extension or projection of the extensible section Kof the suspending cylinder or tube. The movable or sliding section ofthe power rod or shaft is free to slide within the fixed hollow sectionthrough the key orspline connection between the sliding section K of therod and the fixed section K thereof. It will thus be seen that theturn-tab]e-suspending cylinder or tube has a telescopic action and thatthe power rod or shaft also has a telescopic action oncin unison withtheother and that both the turn-tablesuspending cylinder or tube and thepower rod or shaft are rotatable and the rotation of each is independentof the rotation of the other.

The extensible section of the turn-tablesuspending cylinder or tubecarries the frame which supports the arm or boom. This frame, as shown,is constructed with side rails or pieces 0, and each side rail or pieceat each end has an upwardly and inwardly inclined wall or flange O,united by a half-circle side band or rim 0 for each section of theframe, and each end piece has a head or guide 0 each with a semicircularhole or opening and The side rails or pieces O each have journaledthereon on the outer face lower rollers o and upper rollers 0', betweenwhich are located and travel the side beams or pieces P of the arm orboom. The two halves or sections of the carriage or support are boltedtogether by bolts 0 passing through walls or flanges forming the endpieces or braces O, and by bolts 0 passing through end flanges of theheads or guides 0 which furnish the bearings or supports for thescrew-threaded shaft which moves the arm or boom. The half bands or rimsO are bolted or otherwise secured to the lower end of the extensiblesection of the turn-tablesuspending tube or hollow shaft, so as to carryand suspend thearm or boom and its sup porting carriage or frame andoperating parts from the turn-table-suspending tube or shaft.

As shown, the carriage or frame has a lower brace or support 0 securedthereto at one end by bolts o and has an upper brace or support 0secured thereto at one end by bolts 0 the two braces or supportsfurnishing a support for the platform on which the operator stands,

The side sills or rails P of the boom may be of channel-ironconstruction or other suitable formation, and the arm or boom issupported as a whole on the carriage or platform at the end of theturn-tablesuspending tube or shaft by the side sills or rails locatedbetween the upper and lower carrying-rollers o and 0' of the frame orcarriage. At one end of the arm orboom are wheels P,mounted on the endsof a shaft or axle P suitably journalecl in the side sills or rails, soas to give the arm or boom when down or on the floor a rolling supportat one end. One side sill or rail has on its upper edge a rack 19, andthe upper guide wheels or rollers 0 for the sill or rail on this sideare grooved to permit of the passage of the rack. A dog or pawl 13',pivotally mounted on a stud or pin, which may be one of the bolts 0engages the. rack 17, and this dog or pawl has pivoted to its arm ,alink 29 the other end of which is pivoted to the lower end of a lever Pcarryinga dog 133 to engage with a notch p on a segment Phattached tothe platform of the arm or boom, so that when the lever and segment areengaged the pawl or dog will be clear of the rack. A foot-leverP ispivotally mounted between ears p on the platform and at its free endcarries a roller 19 over which a cord P passes. One end of the cord isattached to a post or standard p at the end of the arm or boom, and theother end of the cord afterpassing under a roller p on the frame orcarriage of the arm or boom is attached to a pull stem or rod 19 in theend of a lever P for'a purpose hereinafter described.

A pick-up lifter Q is carried at one end of the arm or boom. Thispick-up or lifter is formed of two side fingers, each extending out froma head or slide Q, movable in a groove q of a support or guide-head Q atthe end of each side sill or rail P of the arm or boom. The two heads orslides Q are connected at the upper end by a cross-shaft g, from whichlinks g are suspended, and carry a shaft g which shaft is connected bylinks q with a shaft 1, mounted in the end of the head R on the end ofthe screw-threaded shaft of the arm or boom. The cross-shaft (1 hassuspended therefrom curved links (1 mounted at their lower ends on across-shaft q. The cross-shaft at' each end projects through a slot (1in the adjacent slide Q, and each end enters and is secured in a head Qas shown in Fig. 12. r

The arm or boom is reciprocated byashaft R, having a screw-thread r, thebody of which passes through and is supported in the heads or guides 0of the frame or carriage of the tu rn-table-suspending tube or shaft.One end of the screw-threaded shaft is held or supported in a rim orband r on a cross-piece or support R, attached to the side sills orrails of the arm or boom, so as to cause the shaft to move or slide asone with the side sills or rails. The unsupported end of the screwthreaded shaft has secured thereto a crosshead or cross-piece R having astem r entering a hole in the end of the shaft and suitably securedtherein. The cross-head or cross-piece has secured thereto a stop-plateR and in upwardly-projecting ears r thereof is mounted a shaft B onwhich shaft is an arm r, having pivoted thereto a dog 4' to engage theedge of the stop-plate, and the dog is pivoted to one end of a link 1*,the other end of .which encircles the cross-shaft q of the heads orslides for the pickup or lifter. A support R attached to the side sillor rail of the arm or boom, is located on each side of the cross head orpiece R and each support has at each end an ear r in which is secured aguide-rod 0', on which the cross-head or cross-piece is free to slide toa limited extent. The supports R have the upwardlyprojected ears a inwhich is mounted the shaft R one ear 0' on each support R and one end ofthe shaft has secured thereto the arm P of the cord P, so that bydrawing on the cord the arm will be turned down to rock the shaft R andmove the arm r to release the dog or catch r from the stop-plate. Theshaft R is returned after being rocked in the construction shown by acoiled spring r secured at one end to the shaft and at the other end toone of the ears r so as to have the necessary action to return the shaftR and the arm P to normal position.

The pick-up or lifter has alimited vertical play in its supportingguides or heads and is suspended or carried by the links from the shaft(1 and the shaft 1, and when the latch or catch r is engaged the pick-upor lifter is held in its raised position; but with the release of thelatch or catch the pick-up or lifter can drop to the limit of themovement permitted by the cross-shaft g and the slots (1 allowing adescent sufficient to enter the pick-up or lifter beneath the article tobe handled by the arm or boom. The release of the latch or catch r canbe held by the operator on the arm or boom platform placing his foot onthe lever P and pressing down, raising the roller 29', producing atension on the cord P by the action of the'rollers p" and p which drawon the cord and depress the arm P rocking the shaft R and raising thearm r and lifting the latch or catch r from engagement, permitting theslides Q to descend, and in descending a straight-line movement ismaintained by the links. The further advance of the arm or boom with thelatch or catch disengaged moves the links g and raises the pick-up orlifter, and when raised to normal position the latch or catch r againengages with the stop-plate R and holds the pick-up or lifter in itsraised position. After the pick-up or lifter is under the article inposition to be raised the dog is engaged with the rack 9 by moving thelever P in the proper direction, giving the pickup or lifter theresistance of the entire arm or boom in lifting the article, and thetravel of the screw-threaded shaft is reversed by engaging the frictionat the opposite end of the threaded sleeve or nut S for the reversetravel to act-and raise or elevate the pick-up or lifter until the crosspiece or head reaches the stop, at which point the article has beensufficiently lifted, and the catch r engages the stop-block and holdsthe pick-up or lifter raised. The dog 1) is then released, and thecontinued rotation of the threaded nut or sleeve travels the arm or boomas required.

The shaft R is encircled by a threaded nut or sleeve S, on which isloosely mounted a bevel-gear S and a bevel-gear S each gear having ahead or sleeve 8, which abuts against a central flange s on the nut, asshown in Fig. 4. Each bevel-gear S and S has coaeting therewith afriction-clutch S which may be an ordinary friction-clutch of the conetype, each gear having the cup 8 of the clutch thereon engaged by thecone 5 on a sleeve or collar 8, sliding on the end of the screw-threadednut or sleeve. The two bevelgears S and S are both in mesh with a commonbevel-gear S, attached to the end of the power-rod K and K for whichpurpose the rod and the gear are connected by a tube or bushing Smounted in a guide head or bearing S attached by screws or otherwise tothe lower end of the extensible section of the suspending cylinder ortube K The bevelgear S has a stem 5 entered into the tube or bushing sand secured therein by suitable pins or rivets, and the end of thepower-rod likewise enters into the tube or bushing s and is securedtherein by suitable pins or rivets, so that the rotation of the shaftrotates the tube or bushing and with it the bevel-gear S rotating eitherone or the other of the bevel-gears S or S according to which clutch isengaged. The upper end of the guide sleeve or bearing S has thereon aband or track 5 having a groove in its upper face, and the tube orbushing s has thereon a band ,or track 8 having a groove in its underface, and between the two tracks, in the groove, balls 5 are located,furnishing a ball-bearing between the power rod or shaft and the sleeveor tube, by which friction is decreased and the rotation of the partsmade more easy and perfect.

The clutches S are operated from a lever T, mounted in ears t on theplatform T and the lever has pivotally connected therewith a link T,which carries an arm t, pivoted thereto and to the side rail or piece 0and connected with the sleeve 8 of one of the clutches by a suitablestud or pivot, and an arm 25 also pivoted thereto and to the side railor piece 0 and connected with the sleeve .9 of the other clutch by asuitable stud or pivot, so that by moving the lever in one direction theclutch of the bevel-gear S will be engaged and the clutch of thebevel-gear S released, and by moving the lever in the opposite directionthe clutch of the bevel-gear S will be engaged and the clutch of thebevel-gear S released. It will thus be seen that the operator by movingthe lever T in the proper direction will engage the proper clutch withits gear, so that the revolving of the bevel-gear S will rotate theengaged bevel-gear, and thereby rotate the nut, which acts on thescrew-thread of the shaft R and moves the shaft and the arm or boom inone direction or the other, according to which bevel-gear S or S is inoperation.

The platform T is carried by the supports or braces'O and O and on thisplatform the operator of the arm or boom stands to manipulate theclutch-lever T and the other appliances which are under'his care. Theplatform has extending up therefrom a back board T and this back boardhas attached thereto a reservoir U for fluid-pressure, preferablycompressed air, receivingits supply by the pipe or tube U from theair-compressor pump c or from a reservoir into which the air-compressorpump forces the air for storage, which reservoir can be carried on theunder side of the carriage or frame or otherwise. The fluid pressure orcompressedair reservoir U has communicating therewith through suitableports or openings 10 a series of valve chambers V, each valve chamberhaving therein an induction and eduction valve operated by a stem 0 froma lever o by the operator on the platform, and communicating with thefluid-pressure or com pressedair reservoir by a pipe u is avalve-chamber V, having an induction and eduction valve therein, thestem o of which is operated from a lever '0 by the operator, and leadingfrom the valve-chamber V is an induction and eduction pipe or hose 0*,which connects with the fluid-pressure cylinder C for moving thepiston-rod of such cylinder and and applying the brakes, as alreadydescribed, for which purpose the operator opens the valve by moving thelevert to admit pressure through the pipe or hose 0 to thefluid-pressure cylinder C and move the piston-rod of such cylinder, andby the same lever moves the valve to close the induction. and open theeduction to escape the air from the cylinder through the pipe or hose.

The levers G0 and G' for operating the clutches G for the gear-wheels Greach has its forked end g connected with the pistonrod of afluid-pressure cylinder, the end of the lever G connecting with thepiston-rod W of a fluid-pressure cylinder W and the end of the lever Gconnecting with the piston-rod W of a fluid-pressure cylinder 7'. Thefluid-pressure cylinders are each mounted on a rod or shaft G by a clamp102 in the arrangement shown, so as to have their piston-rods in linewith the respective levers G and G for the movement of the piston-rodwith the admission of fluid-pressure into the respective cylinders tomove the lovers and engage the friction-clutch with the gear. Thecylinder W has compressed air supplied thereto and educted therefrom bya pipe or tube '10, running from the cylinder to a valve-chamber V, andthe cylinder W has compressed air supplied thereto and educted therefromby a pipe or tube 10, running from the cylinder to a valve-chamber V.The movement of the lever 'v of the valve in the chamber-V for the pipeor tube w opens such valve and admits fluid-pressure into the pipe ortube, forcing the piston of the cylinder W inward, carrying with it thepiston-rod WV and moving the lever G in the direction to engage theparts of the friction-clutch of the gear for that lever, connecting thegear with the shaft G for the rotation of such shaft to revolve the gearand impart rotation to the axle 0 through the gear G moving the carriagein the direction of the rotation of the carryingwheels 0. The release ofthe fluid-pressure by opening the valve, permitting the pressure toescape from the cylinder W through the pipe 20, allows the spring g toact and return the lever G and the piston of the cylinder W to normalposition, releasing the engagement of the clutch G and stopping therevolving of the gear of that clutch from its shaft. The same operationoccurs with the admission of fluid-pressure into the cylinder W byopening the valve of its valve-chamber V for the fluid-pressure to passthrough the pipe w and operate the piston of the cylinder W, except thatthe lever G7 is moved to engage its clutch G with the gear of thatclutch for the gear to be revolved with its shaft G and revolve theshaft 0 at the opposite end of the carriage and in the oppositedirection, giving the carriage an opposite direction of travel by theopposite travel of the carrying-wheels at that end of the carriage orsupport. The release of fluid-pressure from the cylinder W by openingthe valve of the tube or pipe 10 allows the spring g to act and returnthe lever and the piston of the cylinder W to normal position, releasingthe clutch of the lever G and stopping the revolving of the gear of thatclutclr It will thus be seen that the operator on the platform by movingthe proper lever opens a valve to admit fluid-pressure to one or theother of the cylinders W or W and operate one or the other of the leversG and G traveling the carriage forward and back on the frame.

The lever H for operating the clutches of the pulleys H and H has itsforked end It connected with the common piston-rod X ofv twofluid-pressure cylinders X and X for the movement of the piston-rod tomove the lever in one direction or the other. The cylinder X hasfluid-pressure admitted thereinto back of its piston and eductedtherefrom by a tube or pipe :10, connected with a valve-chamber V, andthe cylinder X has fluid-pressure admitted thereinto back of its pistonand educted therefrom by a pipe or tube w, leading to a valve-chamber V.The admission of fluidpressure to the cylinder X by opening the valve ofits valve-chamber for fluid-pressure to pass from the reservoir throughthe valve and the pipe or tube m drives the piston in such cylinder forthe piston-rod X to move the end of the lever H toward the cylinder X,and such movement of the piston-rod and lever engages the clutch of thepulley H for such pulley to be revolved with the rotation of the mainpower-shaft F. The admission of fluid-pressure to the cylinder X byopening the valve of its valve-chamber for fluid pressure to pass fromthe reservoir through the valve and pipe or tube at drives the piston inthe cylinder X for the piston-rod X to move the end of the lever H inthe direction of the cylinder X, engaging the clutch of the pulley H forsuch pulley to be revolved from the main power-shaft F. The engagementof the pulley H through the belt H drives the pulley H and revolves theshaft I for such shaft through the train of gear operated therefrom torevolve the shaft or axle B and cause such shaft or axle to revolve thecarrying-wheels B and move the crane as a Whole on the main track in thedirection corresponding to the direction of travel of the carrying-Wheels. The engagement of the pulley H with the main power-shaft drivesthe cross-belt H for such belt to drive the pulley H and rotate theshaft I, but in the opposite direction from its rotation by the straightbelt, for such rotation of the shaft to reverse the revolution of thetrain of gear op erated therefrom and give a reverse rotation to theshaft or axle B and cause the Wheels B to revolve in the oppositedirection and travel the crane as a whole in the opposite direction. Theoperator standing on the platform can by moving the lever of the propervalve throw into engagement the clutch of whichever pulley is requiredto travel the crane as a Whole in the direction desired on the maintrack, as with the admission of fluidpressure to one or the other of thecylinders X and X the clutch-lever H will be moved for engagement withthe proper clutch.

The lever L for operating the clutches of the bevel-pinions L and L hasits forked end connected with a common piston-rod Y of a fluid-pressurecylinder Y and a fluid-pressure cylinder Y, so that by the admission offiuidpressure into one cylinder or the other the piston-rod will bemoved, moving the lever L to engage the clutch of the bevel-pinion L orthe clutch of the bevel-pinion L Fluid-pres sure is admitted into andeducted from the cylinderY by a tube or pipe y, leading to the cylinderfrom a valve-chamber V, and fluidpressure is admitted into and eductedfrom the cylinder Y by a tube or pipe y, leading to the cylinder from avalve-chamber V. The ad mission of fluid-pressure from the reservoirinto the cylinder Y by opening the valve of its valve-chamber for thepressure to pass .y into the cylinder Y drives the piston in suchcylinder and the piston-rod Y for the rod to move the end of the lever Lin the direction of the cylinder Y. The movement of the end Z of thelever L in the direction of the cylinder Y engages the clutch of thebevelpinion L connecting the pinion with the power-shaft F for thepinion to rotate With the shaft and revolve the bevel-gear L whichrevolves the shaft L and through the pinion Z revolves the main gear Lin one direction, and with the revolving of the gear L theturntable-suspending cylinder or tube shaft and the arm or boom will berevolved, swinging the arm or boom in the direction of rotation. Themovement of'the end Z of the lever L toward the cylinder Y engages theclutch of the bevel-pinion L for such pinion to revolve with the mainpower-shaft F and revolve the bevel-gear L but in the opposite directionfrom the revolving of such gear by the pinion L and the revolving of thegear L rotates the shaft L in the opposite direction and through thepinion l oppositely revolves the main gear L for such gear to revolvethe turntable-suspending cylinder or tube and the boom in the oppositedirection from the revolving of the parts from the pinion L It will thusbe seen that the operator on the platform by opening the proper valveand admitting pressure to one or the other of the fluid-pressurecylinders Y or Y can engage the required bevel-pinion with thebevel-gear L to revolve that gear as required to turn or swing the armor boom in the direction desired.

The levers M and M for operating the clutches M of the bevel-gears M andM are moved from the fluid-pressure cylinders Z and Z, respectively, theleverM havingits forked end m connected with the piston-rod Z of thecylinder Z and the lever M having I its forked end m connected with thepistonrod Z of the cylinder Z. Fluid-pressure is admitted into anddischarged from the cylinder Z by a pipe or tube 2 from a valvechamberV, and fluid-pressure is admitted into and discharged from the cylinderZ by a pipe or tube 2' from a valve-chamber. The admission offluidpressure into the cylinder Z by opening the valve of itsvalve-chamber for pressure to pass from the reservoir through the valveand the pipe z into the cylinder drives the piston and its rod Z to movethe end of the lever M in the direction of the cylinder to engage theclutch M of the bevel-gear M, and the admission of fluidpressure intothe cylinder Z by opening the valve of its valve-chamber for pressure topass from the reservoir through the valve and the pipe z drives thepiston in the cylinder and its rod Z to move the end of the lever M inthe direction of the cylinder and engage the clutch M of the bevel-gearM The engagement of the clutch of the bevelgear M connects the gear withthe powershaft F to be revolved with the shaft and revolve the bevelgearM, which operates the screw-threaded shaft K in one direction for therevolving of such shaft to travel the nut 7r, thereon and move theextensible section of the turntable-suspending cylinder or tube shaft.of the bevel-gear M connects the gear with the power-shaft F to revolvetherewith and have the gear revolve the bevel-gear M in the oppositedirection to that of its revoluthe opposite direction and travel the nutoppositely, giving a reverse movement to the extensible section of theturn-table-suspending cylinder or tube shaft. The operator by openingthe proper valve and admitting fluid-pressure to one or the other of thecylinders Z and Z operates one or the other of the levers M or M toengage either the clutch of the gear M or the clutch of the gear M forthe engaged gear to revolve the gear M and therefrom revolve thescrew-threaded shaft K and travel the'nut in the proper direction asrequired to raise and lower the extensible section of the turn-tablecylinder or tube shaft and raise and lower the arm or boom in horizontalplanes.

It will be understood that the operator on the arm or boom platform byopening the proper valve admits fluid-pressure to whichever cylinderdesired and by moving the valve in the opposite direction opens thevalve for the escape of fluid-pressure from the cylinder. By this meansthe control of the movements of the crane as a whole is under theoperator on the platform. The use of compressed air preferably as thefluidpressure, owing to the rapidity and facility with which it can behandled, gives aperfect control of the various movements throughoperating the several clutch-levers by admitting compressed air into anddischarging the air from whichever cylinder is required for the movementdesired.

The rod or shaft H furnishes a guide for giving a straight-line throw tothe various clutch-levers H, L, M, and M by reason of the forked ends ofthese several levers straddling or passing on each side of the rod orshaft. The rod or shaft also furnishes a support on which to mount theseveral compressed-air or fluid-pressure cylinders X and X, Yand Y, andZ and Z, and to mount the cylinders on the shaft each cylinder X and Xis provided with a clamp 42: for securing the cylinders in position. Thecylinders Y and Y are each provided with a clamp g for securing thecylinders in position, and the cyl- The engagement of the clutch indersZ and Z are each provided with a clamp .2 for securing the cylinders inposition. The clamps encompass and are movable on the supporting rod orshaft H and enable the cylinders to be adjusted properly in relation tothe several levers which they operate to give the required throw to eachlever for moving the several clutches into and out of engagement to givethe required reverse rotation to the various parts from the power-shaft,which has a continuous rotation in the same direction.

The power for operating the crane as a whole and its several parts ismounted and carried on the carriage or traveling support from which thearm or boom is suspended. The main power-shaft is mounted on thecarriage or traveling support and is driven from the power-motorcontinuously in one direction. The frame is traveled on the maintrackfrom the rotation of the main powershaft through themedium ofclutch-actuated pulleys, the clutches of which are operated byfluidpressure cylinders carried on the carriage ortraveling support andhaving a common piston-rod which moves a lever common to both clutches.The carriage is traveled back and forth on the frame from the rotationof the main power-shaft by oppositelypitched worm-gears and aclutch-actuated gear on a shaft at each end of the carriage, with theclutch of each gear operated from fluid-pressure cylinders, one for eachgear, and carried on the carriage or traveling sup port, each cylinderhaving a piston-rod which moves a lever to engage and disengage thegear-clutch. The turn-table cylinder or tubeshaft is revolved in eitherdirection by a gear having opposite directions of rotation from the mainpo'wershaft through the medium of loose pinions on the power-shaft, eachpinion having a clutch', and both clutches are operated by a commonlever from fluid-pressure cylinders carried on the carriage or travelingsupport and having a common piston-rod which acts to move the lever andthrow the clutches into and out of engagement with the pinions. Theextensible turn-table or turning cylinder or tube shaft from which thearm or boomis suspended is advanced and receded through the action of ahollow shaft having a screw-thread on its exterior, which shaft hasopposite directions of rotation given "thereto fromthe main power-shaftthrough bevel-gears loosely mounted on the powershaft, each of which hasa clutch operated bya lever from a fluid-pressure cylinder for eachlever carried on the carriage or traveling support and each having apiston-rod, by means of which the lever for each clutch is moved tothrow the clutch into and out of engagement. The severaloperating-levers and the fluid-pressure cylinders are all carried on thecarriage or movable support, and an air-compressing pump is also carriedon the carriage or traveling support and operated from the mainpower-shaft, producing compressed air for the fluid-pressure to operatein the fluid-pressure cylinders. The compressed air is stored in areceptacle or reservoir which has connected therewith a series ofvalve-chambers, each having an induction and eduction valve, onevalve-cham her and valve for each fluid-pressure cylinder, and eachvalve-chamber is connected with its fluid-pressure cylinder by aninduction and eduction pipe. The support for the arm or boom has thereona platform for an operator, who can manipulate a valve in avalve-chamber as required to produce an operation of a cylinder to givea required movement from the main power-shaft. A lever is provided bywhich the operator can travel the arm or boom horizontally, and suchtravel of the boom is had from the main power-shaft through intermeshinggears and a slidable or extensible power-rod having a gear at its lowerend which meshes with clutch-actuated gears loosely mounted on athreaded sleeve or nut which engages with a threaded shaft, giving suchshaft reverse movements, according to the engagement of one or the otherof the bevel-gears, which engagement is made by the operator on theplatform from a clutchlever, and the boom at its acting end carries apick-up or lifter which has a slight drop movement for insertion beneaththe article to be raised or carried and delivered or deposited by thearm or boom, and the dropping of the pick-up or lifter is had through afoot-lever moved by the operator on the platform. It will thus be seenthat the operator on the platform carried by the support or head onwhich the arm or boom is mounted controls the entire movements of thearm or boom; that the several movements of the crane as a whole and ofthe various parts which go to make up the crane are produced by theemployment of fluid-pressure cylinders, preferably using compressed airas the motive force, and that the necessary changing or shifting of thepower from the main power-shaft to operate whichever part is necessaryfor the required movement of the boom is made very expeditiously and ina positive manner through the application of fluid-pressure, making theoperation of the crane as a whole perfect and reliable in everyparticular.

The crane as a Whole can be traveled in either direction from one end tothe other of the runway or place used and can also be traveled in eitherdirection from one side to the other of the runway or place used. Thearm or boom stands horizontal and is sus pended by a turn-tableextensible cylinder or tubular shaft, so that it can be turned or swungaround in whatever position required for use and can be lowered toreceive the article to be handled and after receiving the article can beraised to carry the article to the place to be deposited, and these movements are controlled by and through the application of fluid-pressure,preferably compressed air. The turning and swinging movement enables thearm or boom to be operated head on to receive or pick up an article, andthe raising and lowering movement enables the arm or boom to be operatedat any point desired within the limit of its ascent and descent. The armor boom has a horizontal reciprocating movement which enables it to beadvanced and receded in horizontal planes for use, and in itsreciprocating movement it can be headed as required by turn-tablesuspension. These movements give the arm or boom perfect freedom ofoperation in every direction-vertical, horizontal,and in a circle.

While I have described the construction and operation of my improvedoverhead traveling crane with considerable min uteness and details ofconstruction, I do not mean thereby to confine myself to forms, details,or operations further than as I may specify or call for them in theseveral claims, as I contemplate the use of equivalent devices and themaking of mechanical changes as circumstances may render advisable orexpedient without departing from the prominent features of my invention.

I claim 1. In an overhead traveling crane, the combination of a framemounted on wheels to travel on a track and having a track thereon, acarriage or traveling support movable on the track of the frame andhaving an arm or boom suspended therefrom, a motor on the carriage, apower-shaft on the carriage driven from the motor, clutch-actuatedpulleys on the power-shaft, an axle or shaft for one pair of theframe-carrying wheels driven from the clutch-actuated pulleys, andfluid-pressure cylinders for engaging and disengaging the clutches ofthe clutch-actuated pulleys, substantially as described.

2. In an overhead traveling crane, the com: bination of a frame mountedon wheels to travel on a main track and having a track thereon, acarriage or traveling support movable on the track of the frame andhaving an arm or boom suspended therefrom, a motor on the carriage, apower-shaft'on the carriage driven from the motor, clutch-actuatedpulleys on the power-shaft, a counter-shaft on the frame driven from theclutch-actuated pulleys, an axle or shaft on the frame for one pair ofthe frame -carrying wheels driven from the counter-shaft, andfluid-pressure cylinders for engaging and disengaging the clutches ofthe clutch-actuated pulleys, substantially as described.

3. In an overhead traveling crane, the combination of a frame mounted onwheels to travel on the main track and having a track thereon, acarriage or traveling support movable on the track of the frame andhaving an arm or boom suspended therefrom, a motor on the carriage, apower-shaft on the carriage driven from the motor continuously in thesame direction, a straight belt and a crossed belt, clutch-actuatedpulleys on the power-shaft one for the straight and one for the crossedbelt, a counter-shaft driven in opposite directions by the belts, atrain of gear operated from the counter-shaft, an axle or shaft for onepair of the frame-carrying wheels driven from the train of gear, andfluid-pressure cylinders for engaging and disengaging the clutches ofthe clutch-actuated pulleys, substantially as described.

4. In an overhead traveling crane, the combination of a main track, aframe mounted on wheels to travel on the main track and having a trackthereon, a carriage or traveling support movable on the track of theframe and having an arm or boom suspended therefrom, a motor on thecarriage, a powershaft on the carriage driven from the motorcontinuously in one direction, a straight belt and a crossed belt, twoclutch-actuated pulleys on the power-shaft, one for the straight and onefor the crossed belt, a counter-shaft, two pulleys on the counter-shaft,one for the straight and one for the crossed belt, for driving thecounter-shaft in opposite directions, 2. train of gear operated from thecounter-shaft, an axle or shaft for one pair of the frame-carryingwheels driven from the train of gear, and fluid-pressure cylinders forengaging and disengaging the clutches of the clutch-actuated pulleys,substantially as described.

5. In an overhead traveling crane, the combination of a power-shaftdriven continuously in one direction, two clutch-actuated pulleys on thepower-shaft, a lever common to the clutch of both pulleys, a fixed rodor shaft having movable collars thereon engaging the lever, a coiledresistance-spring on the rod or shaft for each movable collar, andfluidpressure cylinders having a common pistonrod formoving the lever inopposite directions to engage the clutches of the clutchactuated pulleysand have the springs operate to return the lever and disengage theclutches, substantially as described.

6. In an overhead traveling crane, the combination of a power-shaftdriven continuously in one direction, a straight belt and a crossedbelt, two clutch actuated pulleys on the power-shaft one for thestraight and one for the crossed belt, a lever common to the clutch ofboth pulleys, fluid-pressure cylinders for moving the lever in oppositedirections to engage and disengage the clutches of the clutch-actuatedpulleys and drive either belt, a counter-shaft driven in oppositedirections by the belts, and means for transmitting power from thecounter-shaft to travel the crane as a whole in either direction,substantially as described.

7. In an overhead traveling crane, the combination of a power-shaftdriven continuously in one direction, two clutch-actuated pulleys on thepower-shaft, a lever common to the clutch of both pulleys,fluid-pressure cylinders for moving the lever in opposite directions toengage and disengage the clutches of the pulleys, a fluid-pressureinduction and eduction pipe for each cylinder, and a valvechamber foradmitting pressure into and discharging pressure from each pipe,substantially as described.

8. In an overhead traveling crane, the combination of a carriage ortraveling support having the arm or boom suspended therefrom, a motor onthe carriage or support, a powershaft on the carriage driven from themotor continuously in one direction, oppositelypitched worm gears on thepowershaft, a cross-shaft at each end of the carriage driven in oppositedirections from the oppositelypitched worm-gears, an axle at each end ofthe carriage having traveling wheels on each axle for moving thecarriage, a gear connection between the cross-shaft and the axle at eachend of the carriage, a clutch for each cross-shaft gear, and afiuid-pressure cylinder, for operating each clutch to engage anddisengage the clutch and travel the carriage in opposite directions,substantially as described.

9. In an overhead traveling crane, the comv for each lever, engaging anddisengaging the clutch of its gear to move the carriage in oppositedirections, substantially as described.

10. In an overhead traveling crane,the combination of a movable carriageor traveling support having an arm or boom suspended threfrom, a powershaft on the carriage driven continuously in one direction,oppositely-pitched worm-gearspn the power-shaft, a clutch-actuatedgear-shaft at each end of the carriage driven from the Worm-gear at itsend of the carriage, an axle at each end of the carriage driven from theclutch-actuated gear-shaft, a lever for the clutch of each clutch-gear,afixed rod or shaft having thereon a movable collar engaging the lever,a spring on the rod or shaft engaging the movable collar, and afluid-pressure cylinder for each lever operating to move the lever andengage and disengage the clutch and have the spring operate to returnthe lever, substantially as described.

11. In an overhead traveling crane,the combination of a movable carriageor traveling support having an arm or boom suspended therefrom, a power-shaft on the carriage driven continuously in one direction,oppositely-pitched worm-gears on the power-shaft, a clutch-actuatedgear-shaft at each end of the carriage driven from the Worm-gear at itsend of the carriage, an axle at each end of the carriage driven from theclutch-actuated gear-shaft, a lever for the clutch of each clutch-gear,a fluid-pressure cylinder for each lever operating to move the lever andengage and disengage the clutch, an induction and eduction pipe forfluid-pressure to each cylinder, and a valve-chamber for admittingpressure into and discharging pressure from the cylinder-pipe,substantially as described.

12. In an overhead traveling crane,the combination of a movable carriageor traveling support having an 'arm or boom suspended therefrom, apower-shaft on the carriage driven continuously in one direction, twoclutch-actuated bevel-pinions on the powershaft, a bevel-gear engaged byboth bevelpinions, a shaft driven by the bevel-gear and having a pinionthereon, a gear driven from the pinion and having suspended therefromthe turn-table cylinder or tube shaft carrying the arm or boom, forturning the turntablesuspending cylinder or tube shaft in oppositedirections from the engagement of the bevel-pinions, and fluid-pressurecylinders for engaging and disengaging the clutches of thebevel-pinions, substantially as described.

13. In an overhead traveling crane,the com= bination of a movablecarriage or traveling support having an arm or boom suspended therefrom,a power-shaft on the carriage driven continuously in one direction, two

.bevel-pinions loosely mounted on the shaft and facing each other, aclutch for each bevelpinion, a bevel-gear common to both bevelpinionsand driven in opposite directions from the pinions, a gear driven fromthe bevel-gear and having suspended therefrom the turn-table cylinder ortube shaft carrying the arm or boom, a lever common to both clutches,and fluid-pressure cylinders for moving the lever by fluid-pressure inopposite directions to engage and disengage the clutches and revolve theturn-table-suspending cylinder or tube shaft in opposite directions,substantially as described.

14. In an overhead traveling crane,the combination of a movable carriageor traveling support having an arm or boom suspended therefrom, apowershaft on the carriage driven continuously in one direction, twobevel-pinions loosely mounted on the powershaft and facing each other,a' clutch for each pinion engaging its pinion with the powershaft, alever common to both clutches,a fixed shaft or rod having thereon loosecollars between which the end of the lever extends, a coiled spring onthe shaft for each loose collar, fluid-pressure cylinders havingacommonpiston-rod with the end of the leverconnected thereto for moving thelever by fluid-pressure in opposite directions, and a gear carrying theturn-table-suspending cylinder or tube shaft of the arm or boom anddriven in opposite directions from the bevel-pinions, substantially asdescribed.

15. In an overhead travelingcrane,the combination of a movable carriageor traveling support having an arm or boom suspended therefrom, apower-shaft on the carriage driven continuously in one direction, twobevel-pinions loosely mounted on the shaft and facing each other, aclutch for each bevelpinion, a lever common to both clutches, a

sure induction and eduction pipe for each cylinder, and a valve-chamberfor each pipe admitting pressure into and discharging pressure from eachpipe, substantially as described.

16. In an overhead traveling crane,the combination of a movable carriageor traveling support having an arm or boom suspended therefrom, apowershaft on the carriage driven continuously in one direction, twobevel-gears loosely mounted on the powershaft and facing each other, aclutch for each bevel-gear, a bevel-gear common to both of theclutch-gears, and driven in opposite directions by the clutch-gears, anextensible turntable-suspending cylinder or tube shaft carrying the armor boom, a screw-threaded tubular shaft Within the extensibleturn-table-suspending cylinder or tube shaft and carried by theoppositely-driven bevel-gear, and a fluid-pressure cylinder, forengaging and disengaging the clutches of each bevelgear byfluid-pressure to cause a rotation of the screw-threaded shaft inopposite direc tion to advance and recede the movable section of theextensible turn-tablesuspending cylinder or tube shaft, substantially asdescribed.

17. In an overhead traveling crane,the combination of a movable carnageor traveling support, a power-shaft on the carriage driven continuouslyin one direction,two bevel-gears looselymounted on the shaft and facingeach other, a clutch for each bevel-gear, a bevel gear common to bothclutch-gears,and driven in opposite directions by the clutch-gears, anextensible turn-table-suspending cylinder or tube shaft carrying an armorboom, a screwthreaded shaft carried by the oppositelydriven bevel-gear, a lever for each bevel-gear clutch, a fluid-pressure cylinderfor each lever engaging and disengaging the clutch from its gear byfluid-pressure, a fixed shaft or rod having thereon a movable collarengaging with the end of the clutch lever, and a spring on the shaftengaging the movable collar, and operating to return the lever,substantially as described.

18. In an overhead travelingcrane,the combination of a movable carriageor traveling support having an arm or boom suspended therefrom, apower-shaft on the carriage driven continuously in one direction, twobevel-gears loosely mounted on the shaft and facing each other, a clutchfor each gear, a lever for each clutch, a bevel-gear common

